Self-contained speed-varying pulley.



No. 63u45. Patented Aug. 2o, |901.

r. w. sPAcKE. l SELF CONTAINED SPEED VABYING' PULLEY.

(Application led Alpr. 24, 1901.)

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\1\ \Y '394 2:" W0 `\3o /8 'at v23 '21am-33 @wom/hoz 628% tf1/Leases f1 Hof/11u15 Patented Aug. 2b, |9011.,` F. w. sPAcKE. ASELF CONTAINED SPEED'VARYING PULLEY.

(Application filed Apr. 274, 1901,) (No 4lnlotlel.)

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`To a/ZZ whom t may concern:

i i i `NITED STATES j PATENT Fries.

FRED IV. SPACKE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO SPEED CI-IANCrINCrl PULLEY COMPANY, OF SAME PLACE.

SELF-CONTAIN ED SPEED-VARYING PU LLEY.

SPECIFICATION forming part f Letters Patent No. 681,145, dated August 20, 1901. Application led April 24, 1901. Serial No. 57,193. (No model.)

`Be it known that I, FRED W. SPACKE, a citi- .zen of the United States, residing at Indiani apolis, in the county of Marion and State of Indiana, have invented a new and useful Self- Contained Speed-VaryingPulley,of which the following is a specification.

`My invention relates to an improvement in i the bearings of a speed-varyingpulley such i `The object of my invention is to provide as that shown in my application Serial No.

` j ball-bearing supports for the several rotating j parts of the speed-varying pulley mentioned of such character that the parts will rotate l with a minimum amount of friction and such that the proper distance betweenthe two "disks may be maintained automatically, at j p the same time maintaining the proper adjustment of the bearings within the driving-disk. The accompanying drawings illustrate my 7 j invention.

j `Figure 1 is a central axial section. i U 1s a side elevationwith one of the disks re-` p s Fig. 2

moved. I

In the drawings, 5 indicates the driven `disk, which is provided with an annular arcshaped track 6 and a hollow axial sleeve 7, f adapted to receive ashaft 8, such as the driving-shaft of a throttling-governor, and be secured thereto by means of a set-screw 9. Ro-

tatably mounted upon sleeve 7 is a drivingl disk 10, provided with an annular arc-shaped track 11, which is the complement of the track 6. Disk 10 is provided with a central hub 12 and a driving-pulley 13, which is preferably formed integral with the disk. Revolubly mounted upon sleeve 7 is a frame 14, upon which is pivoted a pair ot yokes 15, which yckes are supported in the frame upon i axes parallel to each other, but at right an- `gles to the aXisof the sleeve 7. Revolubly mounted in each yoke 15 is a transmissionwheel 16, which rotates about an axis at right angles to the axis of its yoke 15.

All the parts described are similar in construction and arrangement to the correspondj ing parts described and claimed in my application before mentioned, and my present invention consists in the peculiar manner of supporting the several parts.

Frame 14 is provided with an axial bore 17, in each end of which is mounted a ball-race 18, said race being adjustably held in position by means of screws 19. Mounted between the two races 18 is a T-shaped collar 20, which forms a pair of ball-races coperating with the races 18, and mounted in said races are two sets of balls 2l. Collar 20 is provided with an axial bore of such size as to iit easily over sleeve 7.

Each wheel 16 is bored axially to it snugly, but to be axially movable upon, a bushing 22, provided at each end with an annular ballrace 23, each of which coperates with a cone 24, a series of balls 25 being placed between each race 23 and its cooperating cone 24. The distance between the outer ends of cones 24 when the balls 25 are in position is substantially equal to the distance between the inner faces of the two sides of yokel, and the parts are held in position bymeans of a screw 26 passing through said arms and through the cones. A limited adjustment of the cones toward each other may be had by tightening screw 26, so as to spring the arms of the yoke 15 together. Wheel 16 being axially movable upon the bushing 22, it will easily center itself between the two tracks 6 and 11.

Pressed into hub 12 of disk l0 are two ballraces 27 and 28, said races lying in opposite ends of the hub, but facing in the same direction. Coperating with race 27 is a cone 29, which is mounted upon sleeve 7, so as to be axially movable thereon, a rotation of said cone upon the sleeve being prevented by means of a key 30 projecting into a keyway 31, formed in the sleeve. Mounted between race 27 and cone 29 is a series of balls 32. Cooperating with race 28 is a cone 33, which iscapable of axial movement upon sleeve 7 and is provided with a pin 34, projecting into keyway 31. Mounted between race 28 and cone 33 is a series of balls 35. Cone 33 is of the combination witha disk provided with an axial sleeve, of a second disk surrounding said sleeve, a pair of ball-races, facing in the same direction, carried by said second disk, a pair of cones coperating with said races, suitable balis mounted 'between said races and cones, a transmission-wheel mounted bef tween the two disks, and a spring engaging one of said cones and the axial sleeve and normally urging the said cones into engagement with their cooperating balls and drawing the two disks into engagement With the transmission-wheel.

2. Inaself-containedspeed-varyingpulley, the combination with a pair of cooperating disks one revolubly mounted upon the other, of a frame supported between said disks, a yoke supported in said frame and` revoluble about an axis at right angles to the axis of the disk, an axle carried by the yoke at an angle to the axis o f said yoke, a sleeve or bushing rotatably mounted upon saidaxle, and a transmission-wheel mounted upon said bushing and axially movable thereon. y

3. In a speed-varying mechanism, the combination with a pair of cooperating disks, of a yoke mounted between said disks, of an axle carried by said yoke, and a transmission-Wheel revoluble and axially movable upon said axle.

4. In a speed-varying mechanism, the combination with a pair of cooperating disks, of a yoke mounted therebetween, au axle carried by said yoke, a bushing revolubly mounted upon said axle, and a transmission wheel mounted upon said bushing and axially movable thereon. l

5. In a speed-varying mechanism, the combination with a pair of coperatiu g disks, of a yokeA mounted between said disks, a transmission-wheel mounted between the arms ot' the yoke, a bushing mounted in said wheeland axially movable therein, a pair of ball-races carried by said bushing, a pair of cones coperating therewith, balls mounted between said races and cones, and a bolt passing through the cones and the arms of the yoke.

6. In a self-contained speed-varying pulley, the combination with a disk provided with an axial sleeve, ot' a second disk surrounding said sleeve, a pair of ball-races, facingin the same direction, carried by said second disk, a pair of independent cones each cooperating with one of said races and contacting at their adjacent ends, suitable balls mounted between said races and cones, a transmissionwheel mounted between the two disks, and a spring engaging the outer cone and the axial sleeve `and normally urging said cones into engagement with their cooperating balls and drawingthe two disks into engagement with the transmission-wheel.

7. In aself-contained speed-varying pulley, the combination with a disk provided withan axial sleeve, of a second disk surrounding said sleeve, a pair of ball-races, facing in the same direction, carried by said second disk, a pair of cones mounted upon the sleeve and coperating with said races, suitable balls mounted between said races and cones,.a collar axially movable upon the sleeve between the two disks, a frame surroundingsaid collar, balls mounted between said collar andframe, a yoke pivotally mounted upon said frame, a transmission-wheel mounted in said yoke, a

,bushing mounted in said transmission-wheel and axially movable therein, an axle carried by said yoke, and aball-bearing between said axle and bushing.

FRED W. SPACKE.

Witnesses:

ARTHUR M. Hoon, Y BERTHA M. BALLARD. 

